Add simple examples for interrupts

examples/Interrupts/Interrupt_Delayed/Interrupt_Delayed.ino

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+#include <Loom.h>
+
+// Include configuration
+const char* json_config =
+#include "config.h"
+;
+
+// In Tools menu, set:
+// Internet  > Disabled
+// Sensors   > Enabled
+// Radios    > Disabled
+// Actuators > Disabled
+// Max       > Disabled
+
+using namespace Loom;
+
+Loom::Manager Feather{};
+
+// Can be whatever pin you want
+const int PIN_NUM = 11;
+
+// This is not actually called immediately upon an interrupt being generated
+// It is called on next iteration of loop()
+// Thus, this function can be as complicated as you wish since it is not called directly upon interrupt trigger
+void handle_ISR() {
+  detachInterrupt(PIN_NUM);
+
+  LPrintln("Interrupt triggered!");
+  LPrintln("Waiting for interrupt to trigger...");
+
+  // If using a button/switch, simple solution to bounce (just pause a bit for switch to settle)
+  delay(5);
+
+  // Reconnect interrupt since it was previously detached
+  getInterruptManager(Feather).reconnect_interrupt(PIN_NUM);
+}
+
+void setup()
+{
+  Feather.begin_serial(true);
+  Feather.parse_config(json_config);
+  Feather.print_config();
+
+  // Creates a delayed interrupt for specified pin number, sets it as an internal pullup, and generates an interrupt on a LOW signal
+  getInterruptManager(Feather).register_ISR(PIN_NUM, handle_ISR, LOW, ISR_Type::CHECK_FLAG);
+
+  LPrintln("\n ** Setup Complete ** ");
+  LPrintln("Waiting for interrupt to trigger...");
+}
+
+void loop()
+{
+  // Runs the ISR for any interrupts that may have been triggered since last call
+  getInterruptManager(Feather).run_pending_ISRs();
+}

examples/Interrupts/Interrupt_Delayed/config.h

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+"{\
+	'general':\
+	{\
+		'name':'Device',\
+		'instance':1,\
+		'interval':500,\
+		'print_verbosity':2\
+	},\
+	'components':[\
+		{\
+			'name':'InterruptManager',\
+			'params':[0]\
+		}\
+	]\
+}"

examples/Interrupts/Interrupt_Immediate/Interrupt_Immediate.ino

@@ -0,0 +1,56 @@
+#include <Loom.h>
+
+// Include configuration
+const char* json_config =
+#include "config.h"
+;
+
+// In Tools menu, set:
+// Internet  > Disabled
+// Sensors   > Enabled
+// Radios    > Disabled
+// Actuators > Disabled
+// Max       > Disabled
+
+using namespace Loom;
+
+Loom::Manager Feather{};
+
+// Can be whatever pin you want
+const int PIN_NUM = 11;
+
+// Typically a flag is set in an ISR since ISR's should be quick and concise
+// Should be volatile since the variable can be changed outside normal program flow
+volatile bool flag = false;
+
+// Typical Interrupt Service Routine
+void handle_ISR() {
+  detachInterrupt(PIN_NUM);
+  flag = true;
+}
+
+void setup()
+{
+  Feather.begin_serial(true);
+  Feather.parse_config(json_config);
+  Feather.print_config();
+
+  // Creates an immediate interrupt for specified pin number, sets it as an internal pullup, and generates an interrupt on a LOW signal
+  getInterruptManager(Feather).register_ISR(PIN_NUM, handle_ISR, LOW, ISR_Type::IMMEDIATE);
+
+  LPrintln("\n ** Setup Complete ** ");
+}
+
+void loop() {
+  // Reconnect interrupt since it is disabled in ISR
+  getInterruptManager(Feather).reconnect_interrupt(PIN_NUM);
+  LPrintln("Waiting for interrupt to trigger...");
+
+  // Set flag to false and wait until the ISR sets it to true
+  flag = false;
+  while(!flag);
+  LPrintln("Interrupt triggered!");
+
+  // If using a button/switch, simple solution to bounce (just pause a bit for switch to settle)
+  delay(5);
+}

examples/Interrupts/Interrupt_Immediate/config.h

@@ -0,0 +1,15 @@
+"{\
+	'general':\
+	{\
+		'name':'Device',\
+		'instance':1,\
+		'interval':500,\
+		'print_verbosity':2\
+	},\
+	'components':[\
+		{\
+			'name':'InterruptManager',\
+			'params':[0]\
+		}\
+	]\
+}"